Node.js

Node.js is a cross-platform asynchronous event-driven JavaScript runtime, featuring a built-in Test Runner, native WebSocket client, and modern ESM module execution.

When to Use

• Scalable Asynchronous Microservices: Building event-driven I/O-intensive web APIs on Node.js 22 LTS.
• Real-Time Data Streaming & WebSockets: Processing streaming data using native node:stream and Transform streams.
• CLI Development & Build Tooling: Building developer tools, linters, and deployment automations with npm.
• Worker Threads & CPU-Bound Offloading: Offloading cryptographic hashing, compression, and image manipulation.

Quick Start

// Native Test Runner (No Jest needed)
import { test, assert } from "node:test";